Prusa MMU2 Selector with Magnet
thingiverse
Remix of emanuvele's canal selector, unable to link remix. :( https://www.thingiverse.com/thing:3528314 - Emanuvele's selector was used the great success for some time, but I was looking to make some minor updates. - Prusa Github stp repository Selector file used as a starting point. - Extracted filament hole geometry from emanuvele's design. - Uses the stock 10x6x2 Magnet and Extruder magnetic ball bearing, both of which are used by the MK3S extruder. Depending on what upgrade kit you are using, you may need to purchase these items separately. - 2mm thru hole added in order to allow the magnet to be pushed out with a std 1.5mm allen key. - Small circular window added to view bearing during loading/unloading. - I did not find myself needing the remove debris or stringy filament so I did not add the big cutout like emanuvele's - Blade holder geometry updated to match Selector hole geometry. This design has been verified to work with 95A TPU. The photos show the latest Sainsmart TPU torture test, 1000 filament changes. Hardware: - All hardware is a direct swap over from the stock MMU selector with the exception of one of the lead screw nut fasteners. Use one of the kit's spare 18mm screws.
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